Eaton / Cutler-Hammer EC3100 Molded Case Circuit Breaker
- 100A
- 3 Pole
- Bolt-On
Quantity
Eaton / Cutler-Hammer EC3100 - 100A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
A drop-in solution for aging commercial infrastructure, this 100A Eaton Cutler-Hammer breaker ensures continued operation of legacy power systems. It is specifically configured to bolt into older Type EC panelboards without requiring extensive modifications. For facilities transitioning to newer hardware, the EHD3100 is the recommended cross-reference. This three-pole unit delivers 10 kAIC of fault protection at 240VAC, featuring fixed thermal-magnetic trip units and an HACR rating.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | EC3100-R |
| Series | EC |
| Amperage | 100A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Cutler-Hammer Type EC Panelboards |
| Wire Gauge | 14-1/0 AWG (Cu/Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | NEMA AB 1, UL 489 |
| Approval | UL |
| Temp Rating | 40°C |
| Construction Features | HACR Rated, Non-Interchangeable Trip |
Product FAQs
5 answersWhich panelboards are compatible with the EC3100 circuit breaker?
This breaker is specifically designed to bolt into legacy Cutler-Hammer Type EC panelboards. It utilizes the classic Westinghouse E-Frame footprint for drop-in replacement in older commercial infrastructure.
Is there a modern replacement for the legacy EC3100 breaker?
Yes. For facilities transitioning to newer hardware or seeking a direct cross-reference, the Eaton EHD3100 is the recommended replacement that fits the exact same E-Frame footprint.
What does the LI trip function code indicate on this breaker?
The LI designation means it features fixed thermal and fixed magnetic trip units. The thermal component provides long-time protection against gradual overloads, while the magnetic component offers instantaneous protection against short circuits.
Is the EC3100 suitable for HVAC applications?
Yes, this breaker is HACR rated, making it approved for use with heating, air conditioning, and refrigeration equipment circuits.
Does the EC3100 provide ground fault or arc fault protection?
No, this is a standard thermal-magnetic breaker providing only overload and short-circuit protection. It does not include GFCI or AFCI circuitry.
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